W123 240D Dash Speaker Adapter

I ran into an issue while installing a sound system in my 1978 Mercedes Benz 240D. The 3.5" speakers I ordered were too big to get the factory speaker cover back on. These allowed me to do so. I have uploaded the .3mf and the fusion files so if you would like to make adjustments you can. I am unsure if this works in the newer 240Ds and 300Ds, but its worth a shot if you want to upgrade your system to something more modern. These work with the speakers linked below. Some modifications to the dash and speaker mounting were necessary. I used an M3 nut and allen bolt to mount the speaker. You could use really any hardware you would like. 

https://mbquart.com/shop/mobile/mobile-speakers/dk2-108-discus-3-5-inch-coaxial-speakers/

https://www.bestbuy.com/site/mb-quart-discus-3-1-2-2-way-car-speakers-with-polypropylene-cones-pair-black/6584052.p?sb_share_source=PDP&skuId=6584052